CHICAGO, Illinois (CNN) -- The estranged brother-in-law of singer and actress Jennifer Hudson was indicted Tuesday on three counts of murder, according to the Cook County, Illinois, prosecutor's office.

The slayings of Jennifer Hudson's mother, brother and nephew stunned Chicago and the nation.

William Balfour, 27, is accused of killing Hudson's mother, brother and nephew.

Prosecutors have portrayed Balfour as a jealous man who murdered three people in rage at the thought that his ex-wife had a boyfriend.

Balfour is the estranged husband of Jennifer Hudson's sister, Julia Hudson, and the stepfather of one of the victims, 7-year-old Julian King.